ST5520 - Insulation TestersST5520 Insulation Testers (with External I O Output) Rapidly assess in as fast as 50 ms Quick discharge of residual voltage Freely configurable test voltage (Set from 25 V to 1000 V, 1 V resolution) Contact check function (Prevents errors due to poor contact) Short circuit check function (Stops potentional defects from reaching the market)
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